package com.xyz.dao;

import com.xyz.educenter.entity.UcenterMember;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;

/**
 * <p>
 * 会员表 Mapper 接口
 * </p>
 *
 * @author zsr
 * @since 2021-06-19
 */
public interface UcenterMemberMapper extends BaseMapper<UcenterMember> {

    /**
     * sql查询注册人数
     * @param day
     * @return
     */
    Integer selectRegisterCount(String day);
}
